Electric control box and air conditioner having same

Abstract

An electric control box and an air conditioner having same. The electric control box (100) comprises a box body assembly (1). The box body assembly (1) comprises: a box body (11), an air duct cover (12) and a first wire-passing structure (13). The air duct cover (12) is arranged outside the box body (11), and a heat-dissipation air duct (12a) is formed between the air duct cover (12) and the box body (11). An inlet (12a1) and an outlet (12a2) of the heat-dissipation air duct (12a) are respectively located on two sides of the air duct cover (12) along a first direction (X). The first wire-passing structure (13) is located on one side of the air duct cover (12) in a second direction (Y). The second direction (Y) is perpendicular to the first direction (X). A mounting opening (11a) is formed on the box body (11). The first wire-passing structure (13) is sealed to the mounting opening (11a) and defines a first wire-passing aperture (131).

Description

Electrical control box and air conditioner containing it

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to Chinese patent applications No. 202411197119.2, filed on August 28, 2024, and No. 202422105647.2, filed on August 28, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of air conditioning equipment, and in particular to an electrical control box and an air conditioner having therein. Background Technology

[0004] Some air conditioners in related technologies use flammable refrigerants. If the refrigerant leaks and comes into contact with the electrical control box, it can easily cause an explosion. In addition, when the electrical control box generates a lot of heat during operation, it can affect the reliability of the control box. Summary of the Invention

[0005] This application aims to at least partially solve one of the technical problems in the related art. To this end, this application proposes an electrical control box with good heat dissipation performance and excellent sealing, which can improve the operational reliability of the electrical control box.

[0006] This application also proposes an air conditioner having the aforementioned electrical control box.

[0007] According to the first aspect of this application, the electrical control box includes: a box assembly including a box body, an air duct cover, and a first wiring structure. The air duct cover is disposed outside the box body and forms a heat dissipation air duct between it and the box body. The inlet and outlet of the heat dissipation air duct are respectively located on both sides of the air duct cover along a first direction. The first wiring structure is located on one side of the air duct cover in a second direction, which is perpendicular to the first direction. The box body has an installation opening, and the first wiring structure is sealed in the installation opening and defines a first wiring hole.

[0008] In some embodiments, the duct cover includes a first cover portion and a second cover portion. The second cover portion is disposed on the side of the first cover portion near the inlet of the heat dissipation duct. The first cover portion is opposite to the first wiring structure, and the second cover portion is offset from the first wiring structure. The width of the second cover portion in the second direction is greater than the width of the first cover portion in the second direction.

[0009] In some embodiments, the duct cover includes a first cover portion and a third cover portion. The third cover portion is disposed on the side of the first cover portion near the outlet of the heat dissipation duct. The first cover portion is opposite to the first threading structure, and the third cover portion is offset from the first threading structure. The width of the third cover portion in the second direction is greater than the width of the first cover portion in the second direction.

[0010] In some embodiments, a first opening region and a second opening region are formed on the housing, at least a portion of the first opening region is formed on the portion of the housing that participates in defining the heat dissipation duct, and the second opening region is located downstream of the first opening region along the ventilation direction of the heat dissipation duct; the electrical control box further includes: a first radiator, the first radiator is disposed at the first opening region and includes a first heat dissipation portion extending into the heat dissipation duct; and a second radiator, the second radiator is disposed at the second opening region and at least a portion is located outside the housing, and the portion of the second radiator located outside the housing is located at the outlet of the heat dissipation duct.

[0011] In some embodiments, the box body includes a first box cover, which is made of a non-metallic material and forms a first opening area and a second opening area. The electrical control box includes a circuit board disposed in the box body. The circuit board includes a substrate and a first passive device and a first power device disposed on the substrate. The first passive device is disposed corresponding to the first opening area, and the first power device is disposed corresponding to the second opening area. The first box cover has a concave-convex structure, which protrudes at the first opening area and is recessed at the second opening area.

[0012] In some embodiments, a first heat sink is disposed on a first cover and contacts a first passive device for heat transfer through a first thermally conductive medium; a second heat sink is disposed on a circuit board and contacts a first power device for heat transfer through a second thermally conductive medium; and the second heat sink passes through a second opening area; and / or, the first cover is made of plastic.

[0013] In some embodiments, the housing has a wiring operation port, the mounting port is located at the edge of the wiring operation port, the first wire threading structure is a sealing ring and is embedded in the mounting port, and the housing assembly also includes an operation port cover plate, which is installed on the housing and covers the wiring operation port and the first wire threading structure.

[0014] In some embodiments, the operating port cover has buckles at both ends in the first direction, the buckles extend toward the box body and engage with the box body, the first wire threading structure is located on the edge of the wiring operating port in the third direction, the third direction is perpendicular to the second direction and the first direction respectively, and the first wire threading structure is located between the buckles at both ends in the first direction.

[0015] In some embodiments, the duct cover includes a first cover, a third cover, and a fourth cover. The third cover is disposed on the side of the first cover near the outlet of the heat dissipation duct, and the fourth cover is disposed on the side of the third cover near the outlet of the heat dissipation duct. The first cover is opposite to the first wiring structure, the third cover is opposite to the snap fastener at one end near the outlet of the heat dissipation duct, and the fourth cover is offset from the operating port cover. The width of the fourth cover in the second direction is greater than the width of the third cover in the second direction, and the width of the third cover in the second direction is greater than the width of the first cover in the second direction.

[0016] In some embodiments, the first wire-passing structure is located on one side edge of the wiring operation port in the third direction, which is perpendicular to the second direction and the first direction, respectively. The first wire-passing structure defines a first wire-passing hole that extends through the third direction and can be expanded by the wire. The housing assembly also includes a second wire-passing structure located on one side edge of the wiring operation port in the first direction near the inlet of the heat dissipation duct, and defines a second wire-passing hole that extends through the first direction and can be expanded by the wire. The operation port cover also covers the second wire-passing structure.

[0017] In some embodiments, a first threading hole penetrates a first threading structure along a third direction and toward the operating port cover plate. The first threading structure has a first hollow hole open toward the operating port cover plate. The operating port cover plate has a first protrusion extending toward the box body. The first protrusion extends into the expanded first threading hole and the first hollow hole. And / or, a second threading hole penetrates a second threading structure along a first direction and toward the operating port cover plate. The second threading structure has a second hollow hole open toward the operating port cover plate. The operating port cover plate has a second protrusion extending toward the box body. The second protrusion extends into the expanded second threading hole and the second hollow hole.

[0018] The air conditioner according to the second aspect of this application includes the electrical control box according to the first aspect of this application.

[0019] In some embodiments, the electrical control box is located in the outdoor unit of the air conditioner. The outdoor unit includes a housing and a partition plate located inside the housing. The partition plate divides the space inside the housing into a compressor chamber and a fan chamber located on both sides of the partition plate. The electrical control box is located at the partition plate, and the inlet of the heat dissipation duct is connected to the compressor chamber, and the outlet of the heat dissipation duct is connected to the fan chamber.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the structure of an electrical control box according to an embodiment of this application;

[0022] Figure 2 is an exploded view of the structure of an electrical control box according to an embodiment of this application;

[0023] Figure 3 is a top view of an electrical control box according to an embodiment of this application;

[0024] Figure 4 is a bottom view of an electrical control box according to an embodiment of this application;

[0025] Figure 5 is a cross-sectional view of AA based on the example shown in Figure 4;

[0026] Figure 6 is a top view of the hidden air duct cover of the electrical control box according to an embodiment of the present application;

[0027] Figure 7 is a structural schematic diagram of an operating port cover plate according to an embodiment of this application;

[0028] Figure 8 is a structural schematic diagram of the outdoor unit of an air conditioner according to an embodiment of the application;

[0029] Figure 9 is a partial structural schematic diagram of an outdoor unit according to an embodiment of this application.

[0030] Reference numerals: Outdoor unit 1000; Electrical control box 100; First direction X; Second direction Y; Third direction Z; Box assembly 1; Box 11; Mounting port 11a; Wiring operation port 11b; First opening area S1; Second opening area S2; First cover 111; Second cover 112; Air duct cover 12; Heat dissipation air duct 12a; Inlet of heat dissipation air duct 12a1; Outlet of heat dissipation air duct 12a2; First cover portion 121; Width W1 of the first cover portion in the second direction; Second cover portion 122; Width W2 of the second cover portion in the second direction; Third cover portion 123; Width W3 of the third cover portion in the second direction; Fourth cover portion 124; Width W4 of the fourth cover portion in the second direction; First wiring structure 13; Sealing ring 13a; First wiring hole 131; First hollow hole 132; Operation port cover plate 14; Buckle 141; First protrusion 142; Second protrusion 143; Second wiring structure 15; second wiring hole 151; second hollow hole 152; first heat sink 2; second heat sink 3; circuit board 4; substrate 41; first passive device 42; first power device 43; housing 200; press chamber 201; fan chamber 202; partition plate 300. Detailed Implementation

[0031] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0032] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0033] The electrical control box 100 of the first aspect of this application is described below with reference to the accompanying drawings.

[0034] According to the embodiment of the present application, the electrical control box 100, as shown in Figures 1 and 2, includes a box body 11, an air duct cover 12, and a first wiring structure 13. As shown in Figure 5, the air duct cover 12 is disposed outside the box body 11 and forms a heat dissipation air duct 12a between it and the box body 11. The inlet 12a1 and outlet 12a2 of the heat dissipation air duct 12a are respectively located on both sides of the air duct cover 12 along the first direction X. As shown in Figure 3, the first wiring structure 13 is located on one side of the air duct cover 12 in the second direction Y. The second direction Y is perpendicular to the first direction X. As shown in Figures 2 and 3, the box body 11 has a mounting opening 11a. The first wiring structure 13 is sealed in the mounting opening 11a and defines a first wiring hole 131.

[0035] A heat dissipation air duct 12a is formed between the air duct cover 12 and the box body 11. A heat dissipation airflow flows in the heat dissipation air duct 12a, which can accelerate the removal of heat from the box body 11 and improve the heat dissipation speed of the sealed box body 11, thereby improving the heat dissipation performance of the electrical control box 100.

[0036] The first threading structure 13 is located on one side of the air duct cover 12 in the second direction Y, which can reduce the installation interference between the first threading structure 13 and the air duct cover 12 and improve the assembly efficiency; and the arrangement of the first threading structure 13 is staggered from the extension direction of the heat dissipation air duct 12a, which reduces the interference of the first threading structure 13 on the heat dissipation air duct 12a and is conducive to the flow of air in the heat dissipation air duct 12a.

[0037] The first wiring structure 13 defines a first wiring hole 131. Wires extending into or from the housing 11 pass through the first wiring hole 131. The first wiring structure 13 can limit the wiring and improve its neatness. Furthermore, the first wiring structure 13 is sealed and installed at the mounting opening 11a. By using the first wiring hole 131 to pass wires, the sealing performance of the housing 11 can be improved, reducing the possibility of flammable refrigerant or water entering the housing 11 and enhancing the operational safety of the electrical control box 100.

[0038] For example, the "threading hole" can be formed as a perforated structure that penetrates the threading structure along the extension direction of the thread, thereby achieving a simple seal through the interference fit between the perforation and the thread. Alternatively, the "threading hole" can also be formed as a gap-shaped structure that penetrates the threading structure both along the extension direction of the thread and radially along the thread, allowing the thread to be inserted radially into the threading hole. This makes it easy for the end of the thread with a connector to mate with the threading structure, thus improving the ease of assembly.

[0039] According to the embodiment of this application, the electrical control box 100 has a first wire-passing hole 131 provided at the first wire-passing structure 13. The first wire-passing hole 131 is tightly fitted with the wire, which can improve the sealing of the wiring of the electrical control box 100. Furthermore, by forming a heat dissipation air duct 12a between the air duct cover 12 and the box body 11, the heat dissipation airflow accelerates the removal of heat from the box body 11, which can improve the heat dissipation speed of the sealed box body 11. Thus, while ensuring the sealing of the box body 11, the heat dissipation speed of the electrical control box 100 is improved, thereby improving the working reliability of the electrical control box 100.

[0040] In some embodiments of this application, as shown in FIG3, the air duct cover 12 includes a first cover portion 121 and a second cover portion 122. The second cover portion 122 is disposed on the side of the first cover portion 121 near the inlet 12a1 of the heat dissipation air duct. The first cover portion 121 is opposite to the first wire threading structure 13, and the second cover portion 122 is offset from the first wire threading structure 13. The width W2 of the second cover portion 122 in the second direction Y is greater than the width W1 of the first cover portion 121 in the second direction Y.

[0041] The duct cover 12 is arranged to avoid the first threading structure 13. The first threading structure 13 is located on one side of the duct cover 12 in the second direction Y. The first cover portion 121 of the duct cover 12 is opposite to the first threading structure 13 in the second direction Y. Therefore, the width W1 of the first cover portion 121 in the second direction Y is smaller than the width W2 of the second cover portion 122 in the second direction Y.

[0042] Compared to the design of moving the first threading structure away from the air duct cover along the second direction to avoid the air duct cover, the embodiment of this application reduces the size of the first cover 121 and keeps the first threading structure 13 in place, which can reduce the volume of the box assembly 1 and facilitate the arrangement of the electrical control box 100.

[0043] Compared to the design that reduces the overall size of the air duct cover by moving away from the first wiring structure along the second direction, the embodiment of this application shortens the size of only the first cover 121 opposite to the first wiring structure 13, while retaining the size of the second cover 122 near the inlet 12a1 of the heat dissipation air duct. This increases the air intake area of ​​the heat dissipation air duct 12a, which is beneficial to increasing the air intake volume of the heat dissipation air duct 12a, thereby improving the heat dissipation speed of the electrical control box 100.

[0044] In some embodiments of this application, as shown in FIG3, the air duct cover 12 includes a first cover portion 121 and a third cover portion 123. The third cover portion 123 is disposed on the side of the first cover portion 121 near the outlet 12a2 of the heat dissipation air duct. The first cover portion 121 is opposite to the first wire threading structure 13, and the third cover portion 123 is offset from the first wire threading structure 13. The width W3 of the third cover portion 123 in the second direction Y is greater than the width W1 of the first cover portion 121 in the second direction Y.

[0045] The duct cover 12 is arranged to avoid the first threading structure 13. The first threading structure 13 is located on one side of the duct cover 12 in the second direction Y. The first cover portion 121 of the duct cover 12 is opposite to the first threading structure 13 in the second direction Y. Therefore, the width W1 of the first cover portion 121 in the second direction Y is smaller than the width W3 of the third cover portion 123 in the second direction Y.

[0046] Compared to the design of moving the first threading structure away from the air duct cover along the second direction to avoid the air duct cover, the embodiment of this application reduces the size of the first cover 121 and keeps the first threading structure 13 in place, which can reduce the volume of the box assembly 1 and facilitate the arrangement of the electrical control box 100.

[0047] Compared to designs that reduce the overall size of the duct cover along the second direction away from the first wiring structure, this embodiment shortens only the size of the first cover 121 opposite to the first wiring structure 13, while retaining the size of the third cover 123 near the outlet 12a2 of the heat dissipation duct. This increases the flow area of ​​the heat dissipation duct 12a, which is beneficial for increasing the contact area between the heat dissipation airflow and the box 11, thus improving the heat dissipation effect of the electrical control box 100. Furthermore, as the airflow moves from the point directly opposite the first cover 121 to the point directly opposite the third cover 123 in the heat dissipation duct 12a, the flow area increases and the airflow velocity slows down, which is beneficial for sufficient heat exchange between the airflow and the box 11.

[0048] In some embodiments of this application, as shown in Figures 5 and 6, a first opening region S1 and a second opening region S2 are formed on the housing 11. At least a portion of the first opening region S1 is opened on the portion of the housing 11 that participates in defining the heat dissipation duct 12a. The second opening region S2 is located downstream of the first opening region S1 along the ventilation direction of the heat dissipation duct 12a.

[0049] As shown in Figures 5 and 6, the electrical control box 100 further includes: a first radiator 2 and a second radiator 3. The first radiator 2 is located at the first opening area S1 and includes a first heat dissipation part extending into the heat dissipation duct 12a. The second radiator 3 is located at the second opening area S2 and is at least partially located outside the box body 11. The portion of the second radiator 3 located outside the box body 11 is located at the outlet 12a2 of the heat dissipation duct.

[0050] By setting a first opening area S1 on the box body 11 and setting a first heat sink 2 in the first opening area S1, and by setting a second opening area S2 on the box body 11 and setting a second heat sink 3 in the second opening area S2, the first heat sink 2 and the second heat sink 3 have stronger thermal conductivity than the box body 11. The heat inside the box body 11 can be quickly transferred to the outside of the box body 11 through the first heat sink 2 and the second heat sink 3, thereby improving the heat dissipation speed of the electrical control box 100.

[0051] The first radiator 2 has a first heat dissipation part that extends into the heat dissipation duct 12a. Heat dissipation airflow flows in the heat dissipation duct 12a, which can quickly remove the heat from the first radiator 2 and further accelerate the heat transfer speed of the first radiator 2.

[0052] After exchanging heat with the first radiator 2, the temperature of the airflow in the heat dissipation duct 12a is still lower than that of the second radiator 3. Therefore, by placing the portion of the second radiator 3 located outside the housing 11 at the outlet 12a2 of the heat dissipation duct, the airflow that has cooled the first radiator 2 through the heat dissipation duct 12a can be used again to cool the second radiator 3, achieving secondary utilization, accelerating the heat dissipation speed of the second radiator 3, and saving costs.

[0053] In some embodiments of this application, as shown in Figures 2 and 6, the box body 11 includes a first box cover 111, which is made of non-metallic material and forms a first opening region S1 and a second opening region S2.

[0054] The first cover 111 is made of a non-metallic material, which can improve the electrical safety of the control box 100. However, the thermal conductivity of the first cover 111 is relatively poor compared to metallic materials. Therefore, a first opening area S1 and a second opening area S2 are provided in the first opening area S1 and the second opening area S2, and a first heat sink 2 and a second heat sink 3 are provided in the first opening area S1 and the second opening area S2 to quickly transfer the heat inside the box 11 to the outside of the box 11, thereby accelerating the heat dissipation of the control box 100. For example, the first cover 111 can be made of plastic, which helps to reduce weight and cost.

[0055] In some embodiments of this application, as shown in Figures 2 and 5, the electrical control box 100 includes a circuit board 4 disposed in the box body 11. The circuit board 4 includes a substrate 41 and a first passive device 42 and a first power device 43 disposed on the substrate 41. The first passive device 42 is disposed in a first opening area S1, and the first power device 43 is disposed in a second opening area S2.

[0056] The first passive device 42 and the first power device 43 generate heat when they are working. The first passive device 42 is set in the first opening area S1, and the first power device 43 is set in the second opening area S2. That is, the first passive device 42 is set in the first heat sink 2, and the first power device 43 is set in the second heat sink 3. By shortening the heat transfer path between the first passive device 42 and the first heat sink 2, and the heat transfer path between the first power device 43 and the second heat sink 3, the heat transfer efficiency of the first passive device 42 and the first heat sink 2, and the heat transfer efficiency of the first power device 43 and the second heat sink 3 can be improved, so as to quickly transfer the heat inside the box 11 to the outside of the box 11 and accelerate the heat dissipation of the electrical control box 100.

[0057] The first heat sink 2 is disposed on the first cover 111 and contacts the first passive device 42 for heat transfer through the first thermally conductive medium (non-gas). The second heat sink 3 is disposed on the circuit board 4 and contacts the first power device 43 for heat transfer through the second thermally conductive medium (non-gas).

[0058] Optionally, the first thermally conductive medium can be a thermally conductive pad or a thermally conductive substrate 41 with good thermal conductivity. The first passive device 42 and the first heat sink 2 exchange heat indirectly through the thermally conductive pad or the thermally conductive substrate 41, thereby accelerating the heat exchange between the first passive device 42 and the first heat sink 2. Alternatively, the first thermally conductive medium can also be a coating structure such as thermally conductive silicone grease. Alternatively, the first thermally conductive medium can also be a combination of the above-mentioned thermally conductive media, which can be selected according to actual needs.

[0059] Optionally, the second thermally conductive medium can be a thermally conductive pad or thermally conductive substrate 41 with good thermal conductivity. The first power device 43 and the second heat sink 3 exchange heat indirectly through the thermally conductive pad or thermally conductive substrate 41, thereby accelerating the heat exchange between the first power device 43 and the second heat sink 3. Alternatively, the second thermally conductive medium can also be a coating structure such as thermally conductive silicone grease. Alternatively, the second thermally conductive medium can also be a combination of the above-mentioned thermally conductive media, which can be selected according to actual needs.

[0060] The second radiator 3 passes through the second opening area S2, and the first cover 111 has a concave-convex structure, so that it protrudes at the first opening area S1 and is recessed at the second opening area S2.

[0061] As shown in Figures 2 and 5, the height of the first passive device 42 is greater than the height of the first power device 43. Therefore, the first cover 111 protrudes at the first opening area S1 opposite to the first passive device 42 and is recessed at the second opening area S2 opposite to the first power device 43, which is beneficial to the arrangement of the first passive device 42 and the first power device 43.

[0062] In some embodiments of this application, the first passive device 42 includes capacitors, inductors, etc.

[0063] In some embodiments of this application, the first power device 43 includes, but is not limited to, a rectifier bridge, an IGBT (Insulated-Gate Bipolar Transistor), an FRD (Fast Recovery Diode), and an IPM (Intelligent Power Module).

[0064] In some embodiments of this application, as shown in Figures 1 and 2, the housing 11 has a wiring operation port 11b, the mounting port 11a is located at the edge of the wiring operation port 11b, the first wire threading structure 13 is a sealing rubber ring 13a and is embedded in the mounting port 11a, and the housing assembly 1 also includes an operation port cover plate 14, which is installed on the housing 11 and covers the wiring operation port 11b and the first wire threading structure 13.

[0065] The operating port cover 14 is detachably provided on the wiring operating port 11b to close the wiring operating port 11b and make the box 11 a sealed box. The operating port cover 14 can protect the wiring area of ​​the box 11 and cover the wiring operating port 11b and the first wiring structure 13, thereby improving the sealing performance of the box 11.

[0066] The first wiring structure 13 is constructed as a sealing ring 13a. The sealing ring 13a has good sealing performance and is elastic. The sealing ring 13a compresses the wire at the first wiring hole 131, so that the sealing ring 13a and the wire are tightly fitted at the first wiring hole 131 to achieve a seal. This improves the sealing performance of the electrical control box 100.

[0067] In some embodiments of this application, as shown in Figures 3 and 7, the operating port cover 14 has latches 141 at both ends in the first direction X. The latches 141 extend toward the box body 11 and engage with the box body 11. The engagement between the operating port cover 14 and the box body 11 facilitates the assembly and disassembly of the operating port cover 14 and the box body 11, reduces operational difficulty, and facilitates subsequent maintenance and replacement.

[0068] As shown in Figures 2 and 5, the first threading structure 13 is located on one edge of the wiring operation port 11b in the third direction Z. The third direction Z is perpendicular to the second direction Y and the first direction X, respectively, and the first threading structure 13 is located between the two latches 141 in the first direction X. The two latches 141 clamp the first threading structure 13, which can improve the reliability of the fit between the operation port cover plate 14 and the first threading structure 13, and improve the arrangement stability of the first threading structure 13.

[0069] In some embodiments of this application, as shown in Figures 2 and 4, the box body 11 further includes a second box cover 112, which is arranged along the thickness direction of the substrate 41 and covers each other.

[0070] Optionally, the first cover 111 and the second cover 112 are snap-fitted together; or, alternatively, the first cover 111 and the second cover 112 are fixedly connected by fasteners; or, even more alternatively, the first cover 111 and the second cover 112 are snap-fitted together and positioned before being fixedly connected by fasteners, which can improve the assembly efficiency and connection stability of the first cover 111 and the second cover 112.

[0071] In some embodiments of this application, as shown in FIG3, the air duct cover 12 includes a first cover portion 121, a third cover portion 123, and a fourth cover portion 124. The third cover portion 123 is disposed on the side of the first cover portion 121 near the outlet 12a2 of the heat dissipation air duct, and the fourth cover portion 124 is disposed on the side of the third cover portion 123 near the outlet 12a2 of the heat dissipation air duct. The first cover portion 121 is opposite to the first threading structure 13, the third cover portion 123 is opposite to the buckle 141 at one end near the outlet 12a2 of the heat dissipation air duct, and the fourth cover portion 124 is offset from the operation port cover plate 14. The width W4 of the fourth cover portion 124 in the second direction Y is greater than the width W3 of the third cover portion 123 in the second direction Y, and the width W3 of the third cover portion 123 in the second direction Y is greater than the width W1 of the first cover portion 121 in the second direction Y.

[0072] The duct cover 12 is positioned to avoid the first threading structure 13, which is located on one side of the duct cover 12 in the second direction Y. The first cover portion 121 of the duct cover 12 is opposite to the first threading structure 13 in the second direction Y, and the third cover portion 123 is opposite to the buckle 141 in the second direction Y. The buckle 141 is smaller than the first threading structure 13. Therefore, the width W1 of the first cover portion 121 in the second direction Y is smaller than the width W3 of the third cover portion 123 in the second direction Y, and the width W3 of the third cover portion 123 in the second direction Y is smaller than the width W4 of the fourth cover portion 124 in the second direction Y.

[0073] Compared to the design of moving the first wiring structure and the operating port cover away from the air duct cover along the second direction to avoid the air duct cover, the embodiment of this application reduces the volume of the box assembly 1 by shortening the size of the first cover 121 and the third cover 123 and keeping the first wiring structure 13 in place, which is beneficial to the arrangement of the electrical control box 100.

[0074] Compared to designs that reduce the overall size of the duct cover along the second direction away from the first threading structure, this embodiment shortens the size of the first cover 121 opposite to the first threading structure 13 and the third cover 123 opposite to the buckle 141, while retaining the size of the fourth cover 124 near the outlet 12a2 of the heat dissipation duct. This increases the flow area of ​​the heat dissipation duct 12a, which is beneficial for increasing the contact area between the heat dissipation airflow and the box 11, thus improving the heat dissipation effect of the electrical control box 100. Furthermore, when the airflow flows from the point directly opposite the third cover 123 to the point directly opposite the fourth cover 124 in the heat dissipation duct 12a, the flow area increases and the airflow velocity slows down, which is beneficial for sufficient heat exchange between the airflow and the box 11.

[0075] In some embodiments of this application, as shown in FIG5, the first threading structure 13 is located on one side edge of the wiring operation port 11b in the third direction Z. The third direction Z is perpendicular to the second direction Y and the first direction X, respectively. The first threading structure 13 defines a first threading hole 131 that extends along the third direction Z and can be expanded by the wire body. The first threading hole 131 and the wire body are interference-fitted to achieve a seal.

[0076] The housing assembly 1 also includes a second wiring structure 15, which is located on one side edge of the wiring operation port 11b near the inlet 12a1 of the heat dissipation duct in the first direction X, and defines a second wiring hole 151 that runs through the first direction X and can be expanded by the wire body. The operation port cover plate 14 also covers the second wiring structure 15.

[0077] By setting a first threading structure 13 and a second threading structure 15, the first threading hole 131 defined by the first threading structure 13 and the second threading hole 151 defined by the second threading structure 15 extend in different directions, allowing wires with different routing directions to be threaded through, improving the smoothness of wire routing, reducing wire twisting and bending, and helping to improve the working reliability of the electrical control box 100.

[0078] In some embodiments of this application, as shown in FIG2, the first threading hole 131 extends through the first threading structure 13 along the third direction Z and towards the operation port cover plate 14. The first threading structure 13 has a first hollow hole 132 that opens towards the operation port cover plate 14. By providing the first hollow hole 132, on the one hand, it facilitates the deformation of the first threading hole 131, making it easier for the wire to be threaded and improving the assembly efficiency of the electrical control box 100; on the other hand, it can reduce the material used in manufacturing the first threading structure 13 and save the manufacturing cost of the first threading structure 13.

[0079] As shown in Figure 7, the operating port cover plate 14 has a first protrusion 142 extending toward the box body 11. The first protrusion 142 extends into the expanded first threading hole 131 and the first hollow hole 132. The operating port cover plate 14 and the first threading structure 13 have a high degree of fit. The first protrusion 142 compresses the first threading hole 131 and the first hollow hole 132, making the first threading structure 13 fit tightly with the thread body, further improving the sealing performance at the first threading structure 13.

[0080] In some embodiments of this application, as shown in FIG2, the second threading hole 151 extends through the second threading structure 15 along the first direction X and the direction toward the operation port cover plate 14, and the second threading structure 15 has a second hollow hole 152 that is open in the direction toward the operation port cover plate 14.

[0081] By setting the second hollow hole 152, on the one hand, it facilitates the deformation of the second wire-passing hole 151, making it easier to pass the wire through and improving the assembly efficiency of the electrical control box 100; on the other hand, it can reduce the material used in manufacturing the second wire-passing structure 15 and save the manufacturing cost of the second wire-passing structure 15.

[0082] The operating port cover 14 has a second protrusion 143 extending toward the housing 11. The second protrusion 143 extends into the expanded second threading hole 151 and the second hollow hole 152. The operating port cover 14 and the second threading structure 15 have a high degree of fit. The second protrusion 143 presses against the second threading hole 151 and the second hollow hole 152, making the second threading structure 15 fit tightly against the thread, further improving the sealing performance of the second threading structure 15.

[0083] Secondly, embodiments of this application provide an air conditioner, including an electrical control box 100 according to an embodiment of the first aspect of this application.

[0084] According to the embodiment of this application, the electrical control box 100 has good heat dissipation performance and good sealing performance, which can improve the working reliability of the air conditioner.

[0085] In some embodiments of this application, as shown in Figures 8 and 9, the electrical control box 100 is disposed in the outdoor unit 1000 of the air conditioner. The outdoor unit 1000 includes a housing 200 and a partition 300 disposed within the housing 200. The partition 300 divides the space within the housing 200 into a compressor chamber 201 and a fan chamber 202 located on both sides of the partition 300. The electrical control box 100 is disposed at the partition 300, and the inlet 12a1 of the heat dissipation duct is connected to the compressor chamber 201, and the outlet 12a2 of the heat dissipation duct is connected to the fan chamber 202.

[0086] When the fan inside the fan chamber 202 is running, air convection is generated inside the fan chamber 202, that is, a negative pressure is formed at the outlet 12a2 of the heat dissipation duct. Under the action of the negative pressure, the inlet 12a1 of the heat dissipation duct draws in the airflow, the airflow flows into the heat dissipation duct 12a to dissipate heat from the electrical control box 100, and flows along the heat dissipation duct 12a, and finally flows out from the outlet 12a2 of the heat dissipation duct.

[0087] By using the rotation of the fan to drive the airflow into the heat dissipation duct 12a, the cost of separately setting up a drive component in the heat dissipation duct 12a can be saved, and the structural complexity and airflow resistance can also be reduced.

[0088] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0089] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0090] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0091] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0093] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electrical control box, wherein, include: The housing assembly includes a housing, an air duct cover, and a first wiring structure. The air duct cover is disposed outside the housing and forms a heat dissipation air duct between it and the housing. The inlet and outlet of the heat dissipation air duct are located on both sides of the air duct cover along a first direction. The first wiring structure is located on one side of the air duct cover in a second direction, which is perpendicular to the first direction. The housing has an installation opening, and the first wiring structure is sealed in the installation opening and defines a first wiring hole.

2. The electrical control box according to claim 1, wherein, The air duct cover includes a first cover portion and a second cover portion. The second cover portion is located on the side of the first cover portion near the inlet of the heat dissipation air duct. The first cover portion is opposite to the first threading structure, and the second cover portion is offset from the first threading structure. The width of the second cover portion in the second direction is greater than the width of the first cover portion in the second direction.

3. The electrical control box according to claim 1 or 2, wherein, The air duct cover includes a first cover portion and a third cover portion. The third cover portion is disposed on the side of the first cover portion near the outlet of the heat dissipation air duct. The first cover portion is opposite to the first wire threading structure. The third cover portion is offset from the first wire threading structure. The width of the third cover portion in the second direction is greater than the width of the first cover portion in the second direction.

4. The electrical control box according to claim 3, wherein, The housing has a first opening region and a second opening region. At least a portion of the first opening region is located on the portion of the housing that defines the heat dissipation duct. The second opening region is located downstream of the first opening region along the ventilation direction of the heat dissipation duct. The electrical control box further includes: The first radiator is located at the first opening area and includes a first heat dissipation part extending into the heat dissipation duct. The second radiator is located at the second opening area and is at least partially located outside the box. The portion of the second radiator located outside the box is located at the outlet of the heat dissipation duct.

5. The electrical control box according to claim 4, wherein, The box body includes a first lid, which is made of non-metallic material and forms a first opening area and a second opening area. The electrical control box includes a circuit board disposed in the box body. The circuit board includes a substrate and a first passive device and a first power device disposed on the substrate. The first passive device is disposed corresponding to the first opening area, and the first power device is disposed corresponding to the second opening area. The first lid has a concave-convex structure, so that it protrudes at the first opening area and is recessed at the second opening area.

6. The electrical control box according to claim 5, wherein, The first heat sink is disposed on the first cover and contacts the first passive device for heat transfer through a first thermally conductive medium; the second heat sink is disposed on the circuit board and contacts the first power device for heat transfer through a second thermally conductive medium; the second heat sink passes through the second opening area. And / or, the first box lid is made of plastic.

7. The electrical control box according to any one of claims 1-6, wherein, The box body has a wiring operation port, and the mounting port is located at the edge of the wiring operation port. The first wire threading structure is a sealing rubber ring and is embedded in the mounting port. The box body assembly also includes an operation port cover plate, which is installed on the box body and covers the wiring operation port and the first wire threading structure.

8. The electrical control box according to claim 7, wherein, The operating port cover has buckles at both ends in the first direction. The buckles extend toward the box body and engage with the box body. The first threading structure is located on one edge of the wiring operating port in the third direction. The third direction is perpendicular to the second direction and the first direction, respectively. The first threading structure is located between the buckles at both ends in the first direction.

9. The electrical control box according to claim 8, wherein, The duct cover includes a first cover, a third cover, and a fourth cover. The third cover is located on the side of the first cover near the outlet of the heat dissipation duct, and the fourth cover is located on the side of the third cover near the outlet of the heat dissipation duct. The first cover is opposite to the first threading structure, and the third cover is opposite to the buckle at the end near the outlet of the heat dissipation duct. The fourth cover is offset from the operating port cover. The width of the fourth cover in the second direction is greater than the width of the third cover in the second direction, and the width of the third cover in the second direction is greater than the width of the first cover in the second direction.

10. The electrical control box according to any one of claims 7-9, wherein, The first threading structure is located on one side edge of the wiring operation port in the third direction, which is perpendicular to the second direction and the first direction, respectively. The first threading structure defines a first threading hole that extends through the third direction and can be expanded by the wire. The housing assembly also includes a second threading structure, which is located on one side edge of the wiring operation port in the first direction near the inlet of the heat dissipation duct, and defines a second threading hole that extends through the first direction and can be expanded by the wire. The operation port cover also covers the second threading structure.

11. The electrical control box according to claim 10, wherein, The first threading hole penetrates the first threading structure along the third direction and towards the operating port cover plate. The first threading structure has a first hollow hole that opens towards the operating port cover plate. The operating port cover plate has a first protrusion that extends towards the box body. The first protrusion extends into the expanded first threading hole and the first hollow hole. And / or, the second threading hole extends through the second threading structure along the first direction and toward the operating port cover plate, the second threading structure has a second hollow hole that opens toward the operating port cover plate, the operating port cover plate has a second protrusion that extends toward the box body, the second protrusion extends into the expanded second threading hole and the second hollow hole.

12. An air conditioner, wherein, include: The control box according to any one of claims 1-11.

13. The air conditioner according to claim 12, wherein, The electrical control box is located in the outdoor unit of the air conditioner. The outdoor unit includes a housing and a partition plate located inside the housing. The partition plate divides the space inside the housing into a compressor chamber and a fan chamber located on both sides of the partition plate. The electrical control box is located at the partition plate, and the inlet of the heat dissipation duct is connected to the compressor chamber, and the outlet of the heat dissipation duct is connected to the fan chamber.

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